The correct statement(s) pertaining to the adsorption of a gas on solid surface is(are) — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Adsorption involves the release of surface energy as heat, so it is exothermic. With increased temperature, molecules may gain enough activation energy to form chemical bonds, turning physisorption into chemisorption. Chemisorption releases more heat but is slower at lower temperatures due to the requirement of activation energy. Statement C is incorrect because physisorption decreases with increasing temperature. Therefore, correct answer is A,B,D.